Sorry, can't help you at all but wanted to share my first experience. There was a demonstartion of IHM and we all had 10 minute session. I did not like the way it felt or how it made me feel but I did think that it was a therapy with a lot of potential.
I'm in the last weeks of my 24 week course and loving every moment of it and from doing people in class have seen some good benefits already. I think there are a lot of people out there who have no knowledge of massage and who have done a weekend course - if you end up with one of them, let them not put you off as it is a wonderful therapy. I think somebody who does other massage therapies could get away with a weekend course.
So, check out who you go to as you could be disappointed.
Regards,
Jo